Initial back yard testing on magic heated carpets

[pianotuna]

Hi all,

Here is the raw data

Test started at noon on Jan 23, 2014. Air temperature in the RV was well below freezing (-27 c, 16 f) when I picked it up from storage. I ran the generator to exercise it while I put on a new 50 amp Camco plug on my "break out box". After one hour running two radiant and one oil filled heater air temperatures was -8 c (17 f), inside the RV.

Temperature measurements were taken with my newest "toy" a point and shoot thermometer. I did attempt to aim at the same place each time.

When I started the test floor temperature was -13.8 (7 f)

one hour later

rugs at 6 c (42 f)floor at -8 c (17.6 f)

30 minutes later

rugs at 15 c (59 F) floor at -2 (28 f)

Temperature of floor under the rug 28 c (82 f)

30 minutes later

rugs at 27 c (80 f) floor at 2 (35 f)

Temperature of the floor under the rug 37 c (98 f)

30 minutes later

rugs at 33 c (91 f) floor at 5 c (41 f)

Temperature of the floor under the rug 47 c (116 f)

Clearly this is an improvement over what I had before. I'm happy with the heating potential. When I terminated the test, air temperature was 20 c (68 f). I was running 3 oil filled, one radiant and two fan heaters plus the rugs for a total demand of about 4700 watts.

It did warm up outside from the -27 c (16 f) to -4 c (25 f), but time to 20 C air temperature was at least two hours shorter than my last attempt at electric heating. The heaters started to cycle at about the 2 hour mark today. The freeze protection fan is cycling.

[pianotuna]

Hi Mr Wizard,

I'll try to get a measurement for you.

On the 83" and 80" x 21" total is 532 watts (less the converter for the battery bank--but 12 volt demand is less than 2 amps)

[MrWizard]

what is the POWER DRAW in WATTS ?

[pianotuna]

Hi,

They bill based on the size they cut down from. I have one 80" x 21", one 83" x 21", and one 39" x 24". My cost was about $635.00 plus shipping. Here is some pricing on standard sizes pricing for Magic Carpets

I chose indoor/outdoor because I can pressure wash it.

BoonHauler wrote:
Where do we find info on the pricing?

[pianotuna]

Hi Mark,

Yes, I reached 20 C air temperature more or less two hour sooner--starting from -27 vs -31. It is true that it warmed up a lot outside today--but I also was lazy about blocking off the cab area. I was using 4700 watts, and last time got up about 1000 watts more.

I'll get a chance on Sunday to do a test as the temperature will dropping to -28 C.

I wish I had a temperature probe in the sub floor.

[Snowman9000]

My dog would love that!

[MNtundraRet]

pianotuna wrote:
Hi,

The carpet has been going now for 7 hours. Temperature of carpet is 40 C (104 f). Beneath the carpet is 50 C (122 f). The coldest spot I could find was 10 C (50 f).

With the floor heating like that the other heat sources may have an easier time maintaining a comfortable temperature.

[BoonHauler]

Where do we find info on the pricing?

[pianotuna]

Hi,

The carpet has been going now for 7 hours. Temperature of carpet is 40 C (104 f). Beneath the carpet is 50 C (122 f). The coldest spot I could find on the bare floor was 10 C (50 f).

[pianotuna]

Hi,

I got mine from Tempurtech

They can be cut as they do not have wires. I chose to get the indoor/outdoor version as they can be pressure washed.

Halmfamily wrote:
Pianotuna what kind of rug is this, sounds interesting. Where did you purchase it. I think my wife would love one of these for our stick and brick bathroom. Thanks, Randy

[Halmfamily]

Pianotuna what kind of rug is this, sounds interesting. Where did you purchase it. I think my wife would love one of these for our stick and brick bathroom. Thanks, Randy

[MNtundraRet]

Nice to see you have warm weather there. Temperature was -18F this morning in Minneapolis, MN. We have gotten to -3F about 1/2 hour ago. Northern MN was close to -40F this morning.:E

I take it your vacation south is over with. It looks like the carpet will work out for you.:)

Mark